Allen-Bradley 839E, User Manual, Page: 7 / 32

839E Solid-State Flow Sensors User Manual
Pub #10000004735 Ver 03, May 2012 5
Process connection
The following table illustrates the versions of 839E.
Field of
application
Measuring and monitoring of mass flow rates
Measurement and
monitoring, mass flow
rates in sanitary
processes
Process
connection
Item A
Version with thread
process connection
ANSI ¼-in. NPT
(1 = AF14) and ½-in.
NPT
(1 = AF27)
Item B
Version with thread
process connection
G ¼ (2 = AF14) and
G ½
(2 = AF27) as per ISO
228
Item C
Version with
50.8 mm (2 in.) clamp
or 25.4…38.1 mm
(1…1.5 in.)
Thread Length
L1 14.3 mm (0.56 in.)
19 mm (0.75 in.)
12 mm (0.47 in.)
14 mm (0.55 in.)
—
Thread Length
L2 5.8 mm (0.23 in.)
8.1 mm (0.32 in.)
— —
Sensor length L Version L with 30 and 100 mm (1.18 and 3.94 in.)
Operational
range
Liquids from 0.03 to
3.0 m/s (0.1 to
9.84 ft/s)
2
L
L
1
A B C
43.5 (1.71) dia.
50.5 (1.99) dia.